Final disposal

Nuclear Waste Management

There are a total of four nuclear power plant units in the two Finnish nuclear power plants at Eurajoki and Loviisa. The fifth is under construction. When electricity is produced in a nuclear power plant, this generates nuclear waste, which – due to its radioactivity – demands special treatment.

Nuclear Waste

Low-level and intermediate-level waste, also known as reactor waste, is generated during the operation and maintenance of a nuclear power plant. Some nuclear power plant structures also become radioactive during operation, and these structures have to be disposed of when the plant is closed down. Nuclear power plants use uranium as their fuel. This becomes radioactive during operation and turns into waste that has to be disposed of. Before the final disposal, spent nuclear fuel is stored in the interim storage for spent nuclear fuel.

Nuclear Waste Management

The responsibility for nuclear waste management lies with the nuclear power companies, who must take care of the measures associated with the management of the nuclear waste they have generated, and bear the costs for these measures. According to the Finnish Nuclear Energy Act, all nuclear waste must be treated, stored and disposed of within the Finnish borders, and no nuclear waste from other countries shall be imported into Finland.

The Finnish power companies take care of their own reactor waste as well as of the decommissioning waste from nuclear power plants. Both reactor waste and decommissioning waste are disposed of in the reactor waste repository.The power companies takes also care of the interim storage of spent nuclear fuel.

Teollisuuden Voima Oyj and Fortum Power and Heat Oy established Posiva Oy in order to take care of the research and practical measures relating to the final disposal of spent fuel generated in their nuclear power plants.  Spent nuclear fuel will be disposed of in the bedrock of Eurajoki’s Olkiluoto island.


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